K & N air filters Maintenance Precaution

That is not from the filter but from the intake sucking in oil blowby. Make sure the blowby system is working well and the oil level is correct. Many people run too much oil.

 

And guides..sorry for saw point.

 

New filters can come pretty loaded up. I remove a new filter from it's shipping bag and re-bag it sandwiched in paper shop towels in a gallon zip-loc so it wicks off the excess oil, then leave it to air dry a day or two in a clean open space so the oil will tackify. As wet as they come, the oil is volatile enough for some to be lost to the intake. Don't over-oil when you do a cleaning and you should see less or no migration of the oil.

 

Dennis- The OEM filters work great and no chance of fouling your MAF sensors. Ask any of the pros for advice on K&N and BMC air filters with oil in the filter medium.

 

+1. I wouldn't use K&N sort of oil/air filter if you paid me. Many years ago I quickly learned about this in the Porsche world. OEM/paper only on all my cars. Some like the K&N sort of filter and maintain them the proper way, but with the potential downside and to me no noticeable upside from OEM, I stay far away.

 

I used a K&N filter on a Mustang I had. The oil caked onto the MAF sensor and led to a blown head gasket. I won't use a K&N anymore...

 

I don't recommend anything other than OEM air filters.

 

Using K&N filters for about 5 years cost me a new MAF. Be forewarned.

 

Extremely unlikely KN filter will cause any problem. Look at the package of a KN filter. It is basically clean. Oil did not grow since install. Look at how the pvc blowby is vented into the intake of any modern car. It is part of the smog devices. Draft tubes are not legal anymore. The maf and map live in an oil mist environment. And the flow is both directions just like you can find pieces of cat converter in the intake of a 355. There is reversion. A maf can take a huge amount of oil. In fact I have a motor problem on my LS6 motor racecar where the valve covers puke 3oz of oil per lap into the intake. Oil was dripping out the aircleaner. No big deal and the maf is just fine after a clean up.

 

Same here. Too many problems with the MAFs due to what appears to be excessive oiling.

 

I have used these for decades without issue on Ferraris too since the OEM ones are so expensive. I'm happy to put my beliefs to the test. If anyone wants to buy my K&N filter I will be happy to be the guinea pig and report back here.

And BTW...


K&N Product Warranties

<<<Engine Protection Limited Warranty

Unlike many companies, our warranty for O/E replacement air filters and intake systems does extend beyond the replacement of a defective K&N part. For the original purchaser of the product, our warranty covers any engine damage or related costs incurred as a direct result of the use of a properly installed and maintained K&N O/E automotive replacement air filter or intake system on the specific vehicle for which the product was designed to be used by K&N. This includes reasonable vehicle repair costs directly related to an engine problem caused by the failure of a K&N product. Furthermore, we warrant that using our product will not result in a vehicle warranty denial. K&N will not be responsible for any indirect, consequential, special, contingent, or other damages not listed above.

We will promptly reimburse the consumer for the cost of the repair if a service provider denies warranty coverage as a result of a K&N product or claims that a K&N product has caused harm to your engine or vehicle. In order to receive reimbursement, we require each of the following:

The consumer must provide a written statement or repair order from the dealership or service provider in which the dealership or service provider blames the problem or warranty denial on a K&N product.
The service provider or consumer must provide K&N with all allegedly damaged parts. Many states have laws that require a service provider to retain all parts replaced during a vehicle repair, unless given consent to dispose of the parts by the consumer. K&N will pay the shipping cost to recover these parts.
The consumer must provide proof of purchase of the K&N product along with cooperation in helping us investigate the claim.

Once these steps have been completed, K&N will contact the service provider and collect evidence to support their claim. In the event we are not provided with sufficient evidence, we reserve the right to reject the claim and will use our best efforts to assist in establishing your rights toward the service provider under warranty or other provisions.>>>>>

 

FBB- Not in my 575M. The air filters are just not that expensive for the 15,000 miles they last. Even changing them every 5 years is not that expensive.